Presence of conjugase activity in amethopterin-resistant Streptococcus faecium.
D004352:Drug Resistance, Microbial; D005492:Folic Acid; D008727:Methotrexate / Q000494:pharmacology*; D013291:Streptococcus / Q000187:drug effects / Q000201:enzymology*
D005492:Folic Acid; D008727:Methotrexate